<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        [type] {
            color: red;
        }

        [type] {
            /*color: blue;*/
        }
    </style>
</head>
<body>
用户名:<input type="text"><br>
密码:<input type="password"><br>
邮箱<input type="email">
</body>
</html>